公开(公告)号：US20210025298A1

公开(公告)日：2021-01-28

申请号：US16926997

申请日：2020-07-13

Applicant: CUMMINS INC.

Inventor： J. Steven Kolhouse ,  Lyle E. Kocher

IPC: F01M9/10 ,  F01M1/02 ,  F02N11/00 ,  F01L13/00 ,  F02D13/06 ,  F02D41/02

Abstract: A system includes a valve actuation system, a pre-lubrication pump coupled to a lubrication circuit and configured to provide oil to the valve actuation system, a catalyst for receiving and treating exhaust gasses, and a controller. The controller is configured to identify an engine start request and determine whether the catalyst temperature is below a first threshold value. In response to determining that the catalyst temperature is below the first threshold value, the controller actuates the pre-lubrication pump to direct lubricant to the valve actuation system, controls the valve actuation system to deactivate at least one cylinder of an engine, and, subsequent to deactivating the at least one cylinder of the engine, cranks the engine.